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vichka [17]
3 years ago
9

HELP ME WITH THIS QUESTION!!!!​

Mathematics
1 answer:
Veronika [31]3 years ago
6 0

Answer:

2 (B)

Step-by-step explanation:

You might be interested in
Which of the following solutions to the inequality -7x+14>-3x -6? Select all that apply
alexgriva [62]

I went thru it and im pretty sure that only these work

-10

-5

-3

3 0
2 years ago
The thickness of eight pads designed for use in aircraft engine mounts are measured. The results, in mm, are 41.8, 40.9, 42.1, 4
nika2105 [10]

Answer:

We accept H₀ we don´t have enough evidence to support that the mean thickness is greater than 41 mm

Step-by-step explanation:

Sample Information:

Results:

41.8

40.9

42.1

41.2

40.5

41.1

42.6

40.6

From the table we get:

sample mean :  x  =  41.35

sample standard deviation    s = 0.698

Hypothesis Test:

Null Hypothesis                    H₀                x = 41

Alternative Hypothesis        Hₐ                x > 41

The test is a one-tail test

If significance level is  0.01 and n = 8  we need to use t-student distribution

From t-table  α = 0.01  and degree of freedom  df = n - 1  df = 8 - 1

df = 7    t(c) = 2.998

To calculate t(s)  =  (  x  -  41 ) / s/√n

t(s)  =  (  41.35  -  41 ) / 0.698/√8

t(s)  = 0.35 * 2.83/ 0.698

t(s) = 1.419

Comparing   t(s)  and t(c)

t(s) < t(c)

t(s) is in the acceptance region we accept H₀

7 0
3 years ago
C)
DochEvi [55]

Answer:

4 quarters

10 tenths

Step-by-step explanation:

<h3>Tenths</h3>

\frac{1}{10}

<h3>Quarter</h3>

\frac{1}{4}

<h3>Whole</h3>

1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1 = \frac{1}{4}+\frac{1}{4}+\frac{1}{4}+\frac{1}{4}

∴ There are <u>4</u><u> </u><u>quarters</u> to make a whole

1 = \frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}+\frac{1}{10}

∴ There are <u>10</u><u> </u><u>tenths</u><u> </u>to make a whole

5 0
3 years ago
If R is the midpoint of OS , RS = 2x - 4, ST = 4x – 1, and RT = 8x – 43, find QS.
RoseWind [281]

Answer:

56

Step-by-step explanation:

5 0
3 years ago
HELP PLEASE I HAVE A COUPLE MORE! Please help and fast would be great! BRAINLEST!!!
Harlamova29_29 [7]

Answer:

b. slope: -5; y-intercept: 7

Step-by-step explanation:

We are given the equation:

y + 5x = 7

To find the slope and y-intercept of the line, it would be helpful to get the equation into slope-intercept form. The slope-intercept form of a line is:

y = mx + b

where m is the slope and b is the y-intercept.

Lets get the given equation into slope-intercept form.

y + 5x = 7

Subtract 5x from both sides.

y = -5x + 7

Now we have the equation in slope-intercept form. By looking at the equation, we can see that the slope is -5 and that the y-intercept is 7.

The correct answer choice would be b.

I hope you find my answer and explanation to be helpful. Happy studying.

3 0
3 years ago
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